Deprotection

4 N HCI in dioxane (5 ml, 20 mmol) was added to a solution of tert-butyl 2-(3-{[5-(trifluoromethyl)pyridin-2- yl]oxy}phenyl)-7-azaspiro[3.5]nonane-7-carboxylate
(888 mg, 1.92 mmol) in methylene chloride (15 ml) at room temp. After 1 h, the reaction mixture was concentrated in vacuo and dried under vacuum to give the title compound as a
white solid (703 mg, 92%).